class RuboCop::Cop::Lint::PercentStringArray

def contains_quotes_or_commas?(node)
  node.values.any? do |value|
    literal = value.children.first.to_s.scrub
    # To avoid likely false positives (e.g. a single ' or ")
    next if literal.gsub(/[^[[:alnum:]]]/, '').empty?
    QUOTES_AND_COMMAS.any? { |pat| literal.match?(pat) }
  end
end